index.js 2.6 KB

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  1. "use strict";
  2. var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
  3. if (k2 === undefined) k2 = k;
  4. Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
  5. }) : (function(o, m, k, k2) {
  6. if (k2 === undefined) k2 = k;
  7. o[k2] = m[k];
  8. }));
  9. var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
  10. Object.defineProperty(o, "default", { enumerable: true, value: v });
  11. }) : function(o, v) {
  12. o["default"] = v;
  13. });
  14. var __importStar = (this && this.__importStar) || function (mod) {
  15. if (mod && mod.__esModule) return mod;
  16. var result = {};
  17. if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
  18. __setModuleDefault(result, mod);
  19. return result;
  20. };
  21. Object.defineProperty(exports, "__esModule", { value: true });
  22. exports.getDecoder = exports.addDecoder = void 0;
  23. const registry = new Map();
  24. function addDecoder(cases, importFn) {
  25. if (!Array.isArray(cases)) {
  26. cases = [cases]; // eslint-disable-line no-param-reassign
  27. }
  28. cases.forEach((c) => registry.set(c, importFn));
  29. }
  30. exports.addDecoder = addDecoder;
  31. async function getDecoder(fileDirectory) {
  32. const importFn = registry.get(fileDirectory.Compression);
  33. if (!importFn) {
  34. throw new Error(`Unknown compression method identifier: ${fileDirectory.Compression}`);
  35. }
  36. const Decoder = await importFn();
  37. return new Decoder(fileDirectory);
  38. }
  39. exports.getDecoder = getDecoder;
  40. // Add default decoders to registry (end-user may override with other implementations)
  41. addDecoder([undefined, 1], () => Promise.resolve().then(() => __importStar(require('./raw.js'))).then((m) => m.default));
  42. addDecoder(5, () => Promise.resolve().then(() => __importStar(require('./lzw.js'))).then((m) => m.default));
  43. addDecoder(6, () => {
  44. throw new Error('old style JPEG compression is not supported.');
  45. });
  46. addDecoder(7, () => Promise.resolve().then(() => __importStar(require('./jpeg.js'))).then((m) => m.default));
  47. addDecoder([8, 32946], () => Promise.resolve().then(() => __importStar(require('./deflate.js'))).then((m) => m.default));
  48. addDecoder(32773, () => Promise.resolve().then(() => __importStar(require('./packbits.js'))).then((m) => m.default));
  49. addDecoder(34887, () => Promise.resolve().then(() => __importStar(require('./lerc.js'))).then((m) => m.default));
  50. addDecoder(50001, () => Promise.resolve().then(() => __importStar(require('./webimage.js'))).then((m) => m.default));
  51. //# sourceMappingURL=index.js.map